Woven fabric for machine-belting



Specimens.)

J. OLDFIBLD. WOVEN FABRIC FOR MACHINE BELTING.

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' UNITED STATES PATENT OFFICE.

JOHN OLDFIELD, OF MEDFORD, MASSACHUSETTS.

WOVEN FABRIC FOR MACHINE-BELTING.

SPECIFICATION forming part of Letters Patent No. 478,941, dated .J uly 12, 1892.

Application filed October 18, 1890. Serial No. 868,578. (Specimens.)

To all whom it may concern: inner plies and binding them together. In Be it known that I, JOHN OLDFIELD, a citithis manner there is always a greater or less .zen of the United States, residing at Medford, amount of fibrous material between the me- 1u the county of Middlesex and State of Mastallic weft of the two inner plies which will 5 sachusetts, have invented certain new and permit of acorresponding amount of elasticity useful Improvements in Woven Fabrics for or compression between them, even if it is only Machine-Belting, of which the following, taken the fibrous warp of the two plies which come in iny connection with the accompanying drawcontact when there are no other plies between 6o ms, iS il Specification. these two-plies; but if there are one or more 1o Thisv invention relates to certain improvepliesbet'ween them composed Whollyof fibrous ments on a patent granted to Joshua P. Madmaterial, as shown in the drawings, this elasticdox for woven fabric for machine-belting, ity or eompressibility becomes very apprecidated May 13,1890,No.427,700. In the speciable and important. As the metallic bindiication of said patent is described and claimed ing-warp passes alternately from the metallic .15 a fabric having wire warps passing through weft of one ply to the metallic weft of the central plies and binding them together, the other ply any strain upon the metallic warp strand of weft or filling over which said wire is communicated to the metallic weftof the two warps pass being of fibrous material. In pracplies and from them it is distributed to and 7o tice it is found 'that the wire warps cut into taken up by the fibrous material between the 2o and injure the said fibrous weft or filling, thus metallic-weft plies. At the same time, the exteafter a time rendering the belt incapable of rior plies of the belting being composed Wholly sustaining the strain required. Now the obof fibrous material, the surface which comes in ject of this invention is to overcome this decontact with the pulleyis rendered more elas- 75 fGCC- tic, which will cause it to adhere to the pulley 25 The invention consists in the employment of and prevent its slipping. This avoids the newire, wire cable, and wire covered with cotton cessity of covering the wires with gutta-peror other fibrous material for the weft or filling cha, india-ru bber, and varnish, as had to be over which the wire warps pass, by which the done where the belt was composed wholly of 8o fabric is very materially strengthened and will metal. It also renders the belting lighter than 3o last a much longer time than with fabric made if composed wholly of metal and permits of according to the before-mention ed patent. its passing around small-sized pulleys without Referring to the accompanying drawings, so much danger of the metallic warp being Figure l represents a longitudinal section broken by the rapid change of direction as through the fabric. Fig. 2 is a cross-section the strain upon the warp is taken up by the 3 5 of the same. fibrous material composing the exterior of the d represents the warp, and b the weft or belt, as well as the fibrous material between filling. the metallic weft, over which they metallic The fabric is shown as being composed of `warp passes. six plies-two outer or facing plies A A, two Although I have shown and described a fab-v 4o intermediate plies having weft of wire, Wire ric of six plies, the number of said plies maybe cable, wire covered with cotton or other fibrous more or less, according to the size and strength material B B, and two central plies O O. The of the belt required. two central plies O O and the two intermedi- "What I claim isate plies are bound. together by metallic warps 1. A woven fabric for machine-belting and 45 D, and the facing-plies A A are bound to the other like purposes, consisting of a series of f body of the fabric, as shown, by fiber bindingplies, the warps of all of which are offibrous warps E, which extend from one face to the material, and the wefts of two of theinner ones other of the fabric. As thus woven, the fabare metallic, and a series of metallic binderloo ric contains several plies, all of which havev warps passing alternately from the metallic 5o fibrous warp, and two of the inner plies have weft of one of the inner plies to the metallic metallic weft and a series of metallic binderweft of the other inner ply, thereby binding Warp engaging with the metallic weft of the the inner plies together, and the exterior plies them together, and the facing-plies being bound to the inner plies by moans of fibrous 15 bindingavarps passing from one face of the belt to the other, substantially as described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses, on this lith day of zo October, A. D. 1890.

JOHN' OLDFIELD.

lVitnesses:

SAMUEL F. TUFTS, HAROLD Foss. 

